L1 - http://www.journals.pan.pl/Content/85863/PDF/wagner.pdf L2 - http://www.journals.pan.pl/Content/85863 PY - 2013 IS - No 4 DO - 10.2478/gospo-2013-0046 A1 - Wagner, Marian PB - Komitet Zrównoważonej Gospodarki Surowcami Mineralnymi PAN PB - Instytut Gospodarki Surowcami Mineralnymi i Energią PAN VL - vol. 29 DA - 2013 T1 - The geological aspects of meta-lignite and sub-bituminous coal occurrences in Poland within the context of deposits and uneconomic occurrences in Europe UR - http://www.journals.pan.pl/dlibra/publication/edition/85863 T2 - Gospodarka Surowcami Mineralnymi - Mineral Resources Management